Land use change alters phosphatase enzyme activity and phosphatase-harboring microbial abundance in the subalpine ecosystem of southeastern Qinghai-Tibet Plateau, China

Azene, Belayneh; Zhu, Renhuan; Pan, Kaiwen; Sun, Xiaoming; Nigussie, Yalemzewd; Gruba, Piotr; Raza, Ali; Guadie, Awoke; Wu, Xiaogang; Zhang, Lin

doi:10.1016/j.ecolind.2023.110416

Cited by 8 publications

(5 citation statements)

References 67 publications

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“…Climate change largely influences the activity and persistence of microorganisms (Liang et al., 2020). Warming and altered precipitation put selection pressure on microbial communities, leading to the adaptation of community members and subsequent shifts in functions and composition of communities toward species better adapted to the environment (Azene et al., 2023). The PCG's functional diversity and community structure were altered following a shift in temperature and precipitation regimes, particularly demonstrating a higher sensitivity to warming (Figure S3a,b).…”

Section: Discussionmentioning

confidence: 99%

“…Warming and precipitation regime alternations (reduced or increased precipitation) largely influence the activity, functions, and persistence of microorganisms and alter various biogeochemical processes, especially in grassland soils (Azene et al., 2023; Dai et al., 2020; Liang et al., 2020). These global change components put strong metabolism and selection pressure on the soil microbial community, leading to short‐term or long‐term adaptation of community members and subsequent shifts in physiological functions and community composition toward better environmental adaptation (Azene et al., 2023). For example, the increased precipitation raised organic P mineralization in soil by favoring phoD bacteria and increased P availability in wet tropical forests (Sun et al., 2020).…”

Section: Introductionmentioning

confidence: 99%

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Microbial phosphorus‐cycling genes in soil under global change

Wang,

Guo,

Wang

et al. 2024

Global Change Biology

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The ongoing climate change on the Tibetan Plateau, leading to warming and precipitation anomalies, modifies phosphorus (P) cycling in alpine meadow soils. However, the interactions and cascading effects of warming and precipitation changes on the key “extracellular” and “intracellular” P cycling genes (PCGs) of bacteria are largely unknown for these P‐limited ecosystems. We used metagenomics to analyze the individual and combined effects of warming and altered precipitation on soil PCGs and P transformation in a manipulation experiment. Warming and increased precipitation raised Olsen‐P (bioavailable P, AP) by 13% and 20%, respectively, mainly caused by augmented hydrolysis of organic P compounds (NaOH‐Po). The decreased precipitation reduced soil AP by 5.3%. The richness and abundance of the PCGs' community in soils on the cold Tibetan plateau were more sensitive to warming than altered precipitation. The abundance of PCGs and P cycling processes decreased under the influence of individual climate change factors (i.e., warming and altered precipitation alone), except for the warming combined with increased precipitation. Pyruvate metabolism, phosphotransferase system, oxidative phosphorylation, and purine metabolism (all “intracellular” PCG) were closely correlated with P pools under climate change conditions. Specifically, warming recruited bacteria with the phoD and phoX genes, which encode enzymes responsible for phosphoester hydrolysis (extracellular P cycling), strongly accelerated organic P mineralization and so, directly impacted P bioavailability in alpine soil. The interactions between warming and altered precipitation profoundly influenced the PCGs' community and facilitated microbial adaptation to these environmental changes. Warming combined with increased precipitation compensated for the detrimental impacts of the individual climate change factors on PCGs. In conclusion, warming combined with rising precipitation has boosting effect on most P‐related functions, leading to the acceleration of P cycling within microbial cells and extracellularly, including mineralization and more available P release for microorganisms and plants in alpine soils.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Microbial phosphorus‐cycling genes in soil under global change

Wang,

Guo,

Wang

et al. 2024

Global Change Biology

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“…The abundance of phoD in soil correlated positively with ALP activity and the available P concentration ( Fraser et al, 2015 ; Wang et al, 2021 ; Xu et al, 2022 ). The phoD gene is used as a marker gene to estimate the abundance and community composition of organic P-mineralization microorganisms, thereby allowing investigation of the microbial regulatory mechanisms of phosphorus cycling ( Hu et al, 2020 ; Azene et al, 2023 ). In addition to the ALP genes, the ACP genes mainly include phoC , whereas the phytase genes include phyA, appA, etc.…”

Section: Main P Cycling Functional Genes Of Psmsmentioning

confidence: 99%

Soil phosphorus transformation and plant uptake driven by phosphate-solubilizing microorganisms

Pang,

Li,

Solanki

et al. 2024

Front. Microbiol.

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Phosphorus (P) is an important nutrient for plants, and a lack of available P greatly limits plant growth and development. Phosphate-solubilizing microorganisms (PSMs) significantly enhance the ability of plants to absorb and utilize P, which is important for improving plant nutrient turnover and yield. This article summarizes and analyzes how PSMs promote the absorption and utilization of P nutrients by plants from four perspectives: the types and functions of PSMs, phosphate-solubilizing mechanisms, main functional genes, and the impact of complex inoculation of PSMs on plant P acquisition. This article reviews the physiological and molecular mechanisms of phosphorus solubilization and growth promotion by PSMs, with a focus on analyzing the impact of PSMs on soil microbial communities and its interaction with root exudates. In order to better understand the ability of PSMs and their role in soil P transformation and to provide prospects for research on PSMs promoting plant P absorption. PSMs mainly activate insoluble P through the secretion of organic acids, phosphatase production, and mycorrhizal symbiosis, mycorrhizal symbiosis indirectly activates P via carbon exchange. PSMs can secrete organic acids and produce phosphatase, which plays a crucial role in soil P cycling, and related genes are involved in regulating the P-solubilization ability. This article reviews the mechanisms by which microorganisms promote plant uptake of soil P, which is of great significance for a deeper understanding of PSM-mediated soil P cycling, plant P uptake and utilization, and for improving the efficiency of P utilization in agriculture.

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“…The WSP is located in the southeastern part of the QTP (27 1a) and a total area of about 2.98 × 10 5 km 2 . The WSP is influenced by the Qinghai-Tibet Plateau and the Hengduan Mountains, exhibiting a typical plateau monsoon climate with dry and rainless conditions and a large temperature amplitude daily [28,29]. The average annual tempera-ture was 7.5 • C and the average annual precipitation was 87.61 mm in 2020 (Figure 1b).…”

Section: Study Areasmentioning

confidence: 99%

How Land Use Transitions Contribute to the Soil Organic Carbon Accumulation from 1990 to 2020

Zhang,

Xia,

Zhao

et al. 2024

Remote Sensing

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Soil organic carbon stock (SOCS) changes caused by land use changes are still unclear, and understanding this response is essential for many environmental policies and land management practices. In this study, we investigated the temporal–spatial and vertical distribution characteristics of the SOCS in the Western Sichuan Plateau (WSP) using the sparrow search algorithm–random forest regression (SSA-RFR) models with excellent model applicability and accuracy. The temporal–spatial variations in the SOCS were modeled using 1080 soil samples and a set of nine environmental covariates. We analyzed the effect of land use changes on the SOCS in the WSP. The total SOCS increased by 18.03 Tg C from 1990 to 2020. The results of this study confirmed a significant increase in the SOCS in the study area since 2010. There was a 27.88 Tg C increase in the SOCS in 2020 compared to the total SOCS in 2010. We found that the spatial distribution of the SOCS increased from southeast to northwest, and the vertical distribution of the SOCS in the study area decreased with increasing soil depth. Forests and grasslands are the main sources of SOCS the total SOCS in the forest and grassland accounted for 37.53 and 59.39% of the total soil organic carbon (SOC) pool in 2020, respectively. The expansion of the wetlands, forest, and grassland areas could increase the SOCS in the study area. A timely and accurate understanding of the dynamics of SOC is crucial for developing effective land management strategies to enhance carbon sequestration and mitigate land degradation.

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Land use change alters phosphatase enzyme activity and phosphatase-harboring microbial abundance in the subalpine ecosystem of southeastern Qinghai-Tibet Plateau, China

Cited by 8 publications

References 67 publications

Microbial phosphorus‐cycling genes in soil under global change

Microbial phosphorus‐cycling genes in soil under global change

Soil phosphorus transformation and plant uptake driven by phosphate-solubilizing microorganisms

How Land Use Transitions Contribute to the Soil Organic Carbon Accumulation from 1990 to 2020

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